Many attractions are for the tourists around Cox's Bazar. You can go Himchori to see it's Waterfall,

this is
famous for waterfall, you will go Himchori during the rainy season. At that time it is really fabulous
and full waterfall and that can be enjoyed.
Inani beach is also famous. It is famous for rock and coral boulders. In this beach you will find big coral
boulders. You can go to Inani Via Himchory, and need to take Lunch packet.